Relationship-based access control for resharing in decentralized online social networks

Publikationstyp
Conference Paper
Date Issued
2017-10
Sprache
English
Author(s)
Gay, Richard  
Hu, Jinwei  
Mantel, Heiko 
Mazaheri, Sogol  
TORE-URI
http://hdl.handle.net/11420/13845
First published in
Lecture notes in computer science  
Number in series
10723 LNCS
Start Page
18
End Page
34
Citation
Lecture Notes in Computer Science 10723 LNCS: 18-34 (2018)
Contribution to Conference
10th International Symposium on Foundations and Practice of Security, FPS 2017  
Publisher DOI
10.1007/978-3-319-75650-9_2
Scopus ID
2-s2.0-85042544355
Publisher
Springer International Publishing AG
Decentralized online social networks (DOSNs) have adopted quite coarse-grained policies for sharing messages with friends of friends (i.e., resharing). They either forbid it completely or allow resharing of messages only without any possibility to constrain their subsequent distribution. In this article, we present a novel enforcement mechanism for securing resharing in DOSNs by relationship-based access control and user-determined privacy policies. Our mechanism supports resharing and offers users control over their messages after resharing. Moreover, it addresses the fact that DOSNs are run by multiple providers and honors users’ choices of which providers they trust. We clarify how our mechanism can be effectively implemented by a prototype for the DOSN Diaspora*. Our experimental evaluation shows that controlling privacy with our prototype causes only a rather small performance overhead.
Subjects
Access control
Decentralized online social networks
Privacy
DDC Class
004: Informatik